title: Spontaneous pneumomediastinum originating from extensive subcutaneous emphysema.
authors.affiliation: Department of Medicine, University of Pittsburgh Medical Center, USA.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Tomizawa
authors.forename: Adam E
authors.initials: AE
authors.lastname: Sohnen
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D008478:Mediastinal Emphysema / Q000150:complications / Q000000981:diagnostic imaging*; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications / Q000000981:diagnostic imaging*; D011859:Radiography; D013352:Subcutaneous Emphysema / Q000150:complications / Q000000981:diagnostic imaging*